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A210009 Number of (n+1)X6 0..2 arrays containing all values 0..2 with every 2X2 subblock having two or three distinct values, and new values 0..2 introduced in row major order 1
73035, 45763485, 28267925909, 17447565687601, 10768436781440673, 6646136755091102809, 4101906886832685812439, 2531642149295850410640039, 1562495723118378757997238389, 964351492312871402717746880585 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A210012

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

FORMULA

Empirical: a(n) = 573*a(n-1) +30380*a(n-2) -1820317*a(n-3) -64620186*a(n-4) +2413466027*a(n-5) +25834430264*a(n-6) -1438737490222*a(n-7) +12337224757695*a(n-8) +49598042788792*a(n-9) -1084284168587647*a(n-10) +2051249871494598*a(n-11) +30950380519294759*a(n-12) -131549162170363156*a(n-13) -336954198103023061*a(n-14) +2531233463121721773*a(n-15) +533314574197359725*a(n-16) -23102889552381944596*a(n-17) +14132576529391844552*a(n-18) +118149845067651911520*a(n-19) -106832359011686597944*a(n-20) -370826020349056584576*a(n-21) +332001892525145611112*a(n-22) +740724091900438559904*a(n-23) -520203514716405112640*a(n-24) -911754397012097209376*a(n-25) +438911530870836509952*a(n-26) +660062482216350374528*a(n-27) -213627889190601071616*a(n-28) -274458905068840770560*a(n-29) +64171673384081219584*a(n-30) +63976638494074126336*a(n-31) -12400533613647757312*a(n-32) -7927734462478548992*a(n-33) +1498195392215384064*a(n-34) +463499960801820672*a(n-35) -96918864658432000*a(n-36) -8277833545678848*a(n-37) +2471871790448640*a(n-38) -118515327565824*a(n-39)

EXAMPLE

Some solutions for n=4

..0..0..1..1..0..1....0..0..1..0..0..0....0..0..0..0..1..0....0..0..1..0..0..0

..1..1..1..2..0..0....0..1..0..0..2..2....0..1..2..1..0..0....2..2..1..2..0..1

..0..1..2..1..0..2....2..2..1..0..2..0....2..0..0..0..2..0....2..0..0..2..2..2

..1..0..2..2..1..0....1..2..2..1..1..2....0..1..1..1..0..1....1..1..0..2..0..0

..2..2..2..1..2..0....2..1..0..2..1..2....2..2..1..0..1..1....1..0..1..2..0..2

CROSSREFS

Sequence in context: A254357 A031665 A247993 * A237701 A023185 A244254

Adjacent sequences:  A210006 A210007 A210008 * A210010 A210011 A210012

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 16 2012

STATUS

approved

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Last modified October 6 12:35 EDT 2022. Contains 357264 sequences. (Running on oeis4.)